LKML Archive on
help / color / mirror / Atom feed
From: James Bottomley <>
To: Andrew Morton <>
Cc: Robert Hancock <>,
	linux-kernel <>,,
Subject: Re: [PATCH RFC] sd: spin down disks on removal or power-down
Date: Mon, 29 Jan 2007 18:16:40 -0600	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On Mon, 2007-01-29 at 15:47 -0800, Andrew Morton wrote:
> What we don't want to happen is for those disks to spin down during a
> reboot.
> It seems that this is OK with this patch.
> Also, we probably don't want them to be spun down during a kexec_load,
> but
> I expect that's OK too.

Actually, there's another case where we don't want to do spin down, and
that's when we don't own the disc (think external array on a SAN).
Telling this has always been the biggest stumbling block to spin down of
SCSI devices.

There's a patch similar to yours which takes this into account, which is
currently under discussion:


  parent reply	other threads:[~2007-01-30  0:16 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-29  1:47 Robert Hancock
2007-01-29 23:47 ` Andrew Morton
2007-01-29 23:55   ` Robert Hancock
2007-01-30  0:16   ` James Bottomley [this message]
2007-01-30  0:33     ` Robert Hancock
2007-01-31 20:21       ` Stefan Richter
2007-01-31 23:45         ` Robert Hancock

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \ \ \ \
    --subject='Re: [PATCH RFC] sd: spin down disks on removal or power-down' \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).